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Composite Raised Beds

Bob Wheeler, Cooperative Extension Service, is studying how well composite wood products made from our local white spruce hold up to our long daylengths, frigid winters and contact with garden soils. Some boards are treated with zinc to prevent fungal attack.

These beds are the best possible way to get the warmest soils. They are insulated on the bottom with blue foam, filled with garden bed mix, IRT plastic traps the heat of the sun to warm the soil and trickle irrigation allows warm water to make its way into the bed. We use the raised beds to grow our peppers, artichokes and eggplants.

composite wood raised planting beds